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authorJulia Lawall <julia@diku.dk>2008-03-04 15:25:11 -0800
committerGreg Kroah-Hartman <gregkh@suse.de>2008-04-24 21:16:39 -0700
commitdfa5ec79d28300b0d1fdeafbeebf0a6b721edc38 (patch)
treebd379b8bd572186c9274e31e5c3ab3b829512106 /drivers/usb/misc
parent3d71fe0bb29a3fbffdbe69dd0696927b6a23dd4e (diff)
USB: use DIV_ROUND_UP
The kernel.h macro DIV_ROUND_UP performs the computation (((n) + (d) - 1) / (d)) but is perhaps more readable. An extract of the semantic patch that makes this change is as follows: (http://www.emn.fr/x-info/coccinelle/) // <smpl> @haskernel@ @@ #include <linux/kernel.h> @depends on haskernel@ expression n,d; @@ ( - (n + d - 1) / d + DIV_ROUND_UP(n,d) | - (n + (d - 1)) / d + DIV_ROUND_UP(n,d) ) @depends on haskernel@ expression n,d; @@ - DIV_ROUND_UP((n),d) + DIV_ROUND_UP(n,d) @depends on haskernel@ expression n,d; @@ - DIV_ROUND_UP(n,(d)) + DIV_ROUND_UP(n,d) // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/misc')
-rw-r--r--drivers/usb/misc/usbtest.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/usb/misc/usbtest.c b/drivers/usb/misc/usbtest.c
index b6b5b2affad..17100471e46 100644
--- a/drivers/usb/misc/usbtest.c
+++ b/drivers/usb/misc/usbtest.c
@@ -1404,7 +1404,7 @@ static struct urb *iso_alloc_urb (
return NULL;
maxp = 0x7ff & le16_to_cpu(desc->wMaxPacketSize);
maxp *= 1 + (0x3 & (le16_to_cpu(desc->wMaxPacketSize) >> 11));
- packets = (bytes + maxp - 1) / maxp;
+ packets = DIV_ROUND_UP(bytes, maxp);
urb = usb_alloc_urb (packets, GFP_KERNEL);
if (!urb)